Mortising machine



July 15, 1930. A MacLEOD 1,770,542

' MORTISING MACHINE Filed March 20, 1929 5 Sheets-Sheet 1 A 1 1: h/ba/ d h. lflcLeL-ld [rive-info? July 15, 1930. A. K. M LEOD MORTIS ING MACHINE Filed March 20, 1929 5 Sheets-Sheet Af cl'ribald K I LcLsnc/Ifivernur Affcz-rne July 15, 1930. A. K. M LEOD MORTISING MACHINE Filed March 20, 1929 5 Sheets-Shee} 3 5 m W w n i d .D N m \u w H H 9 M I 4 H .2 m K 9 I a Y W I H y c H w v 5 Z 2 A ffu-r'HE July 15, 1930. A. K. M LEOD MORTISING MACHINE 5 Sheets-Sheet 4.-

Filed March 20, 1929 Affczrr/e on the line 66 in Fi ure 2. Fi ure 7 is a ject such, for exam )le as a door to secure the s Patented July 1 5, 1930 i ARGHIBALD KAYE MACLEOD, OF SOMEBVILLE, MASSACHUSETTS Mon'rIsINe MACHINE Application filed March 20, 1829. Serial No. 348,553.

This invention relates to improvements in in Figure 1; and Figure 18 is a side view of portable mortising machines adapted in part the supporting bracket. for power operation and in part for manual Referring to the drawings in detail, it will operation, and has for its general object to be observed that the present machine is in- 3 provide a machine of this type which is of clusive essentially of a frame composed in 55 relatively simple, strong and durable conthis instance of a pair of posts or uprights struction, which is capable of quick and easy 25, 25 secured together in spaced, parallel reattachment to an object to be mortised and lation by upper and lower cross bars 26 and quick and easy detachment therefrom fol- 29, respectively, and by anintermediate cross 19 lowing mortising thereof, and which embar 27 located adjacent to the cross bar 26. 60 bodies a novel combination and arrangement Slidable on the posts 25, 25, between the of adjustable operating parts whereby morcross bars 27 and 29, is another cross bar 28 tising of an object may be effected rapidly which carries the mortising mechanism.

and accurately at desired points and at vari- Pivoted intermediately, as at 48, to the upous different angles with respect to the obper cross bar 26 is a clamp carrying bar 30,155 ject. while pivoted intermediately, as at 49, to the V7ith the. foregoing and other objects in lower cross bar 29, is a second clamp carrying view, the invent-ion consists in the novel feabar 31. tures of construction, combination and ar- Projecting rearwardly from the bar 30 near 0 rangement of parts as will be hereinafter the ends thereof respectively, are lugs 44 and 70 more fully described, illustrated in the ac- 45 into which are threaded screw members companying drawings and defined in the ap- 36 and 37, respectively, which extend transpended claims. versely of the machine and have swivel con- Referring to the accompanying drawings nections at their inner ends with cooperating which form a part ofthis specification and clamp elements 32 and 33, respectively, which Z5 in which similar numerals refer to similar are suitably mounted on the bar for slidparts throughout the various views, Figure ing adjustment longitudinally thereof and 1 is a front view of my machine supported transversely of the machine. The screw upon an ordinary door. Figure 2 is a side members 36 and 37 are provided with hand 30 view of the machine. Figure 3 is a sectional wheels and 41, respectively, for efiecting 39 view on the line 3-3 in Figure 2. Figure 4 their rotation and, as is obvious, by rotatably is a sectional View on the line 4-4 in Figure adjusting said screw members the clamp ele- 2. Figure 5 is a sectional view on the line ments 32 and 33 may be brought into clamp- 55 in Figure 2. Figure 6 is a sectional view ing engagement with opposite faces of an obrear view of the machine. Figure 8 is a view machine thereto during mortising thereof. looking from the line 88 in Figure 7. Fig- The bar 31 also is provided near its ends ure 9 is a sectionalview on the line 99 in with rearwardly projecting lugs 46 and 47 Figure 8. Figure 10 is an enlarged view of into which are threaded screw members 38 the vertical stop gauge. Figure 11 is a secand 39, respectively, which extend transso tional view on the line 1111 in Figure 1. versely of the machine and have swivel con- Figure 12 is a view looking from the line nections at their inner ends with cooperat- 1212 in Figure 7. Figure 13 is a View on ing clamp elements 34 and 35, respectively, the line 13-13 in Figure 12. Figure 14 is a suitably mounted on said bar for adjustment front view of one of the tie bars showing how longitudinally thereof and transversely with 9;; the vertical stop bars may be attached. Figrespect to the machine. The screw members ure 15 is a sectional view on the line 1515 38 and 39 are provided with hand wheels 42 in Figure 11. Figure 16 is a sectional view on and 43, respectively, for effecting their rotathe line 1616 in Figure 15. Figure 17 is a tion to, in turn, efiect ad ustments of the front view of the supporting bracket shown clamp elements 34 and 35, it being understood, of course, that these latter clamp elements function in the same manner as the clamp elements 32 and 33 and that they are intended for cooperation with said last mentioned clamp elements to mount the machine upon an object.

The axes of the pivots 48 and 49 are disposed in alinement so that when the bars 30 and 31 are secured by their respective clamp elements upon an object, the frame of the machine is capable of angular adjustments about said pivots with respect to the object.

The lower cross bar 29 is provided with a peripherally toothed segment 52 and the clamp carrying bar 31 is provided with an extension having a stud 51 journaled therein and carrying rigid therewith a pinion 5O disposed in mesh with the teeth of said segment, the said stud being provided with a clamp nut 53 for securing same against rotation. Thus, by loosening said clamp nut, the frame of the machine is free to be swung about the pivots 48 and 49 and when a desired pivotal adjustment of the frame has been effected, tightening of the clamp nut results in an interlocking engagement between the teeth of the pinion and the teeth of the segment 52 to maintain such adjustment.

Carried by the posts 25, 25 are rack bars 61 and 62, respectively, with which mesh pinions 59 and 60, respectively, fixed on a horizontal shaft 63 which is journaled for rotation in forward extensions of the bar 28 near the ends thereof. Attached to said shaft is a crank 64 through the instrumentalit of which the shaft is adapted to be rotated t ereby to effect adjustments of the bar 28 along the posts 25.

Secured to the forward extensions of the bar 28 is a pair of horizontal guide rods 55 and 56 on which is mounted for sliding ad- 'ustment transversely of the machine a racket 54. In the said forward extensions of the bar 28 is journaled a screw shaft 57 which has threaded engagement through a portion of the bracket 54 and which is provided with a crank 58 for effecting its rotation thereby to effect adjustments of said bracket along the rods 55, 56.

The bracket 54 is in the form of an arm extending forwardly from the cross bar 28, and mounted on said bracket for sliding adjustment therealong, i. e., for forward and rearward adjustment relative to the machine, is a slide member 65. Along the sides of the bracket 54 are formed lateral flanges, and the slide member 65, which is of inverted U- shape in cross section, is inclusive of downwardly directed side portions overlying the outer edges of said flanges whereby said member is held against lateral movement relative to said bracket arm. In addition, L- shaped members 70, 71 are secured to the downwardly directed side portions of the slide member and underlie the lateral flanges of the bracket 54 whereby said slide member is held against upward movement relative to said bracket.

Extending downwardly from the slide member 65 at opposite sides of the bracket 54 are bearing members 72 and T3 in which is rotatably mounted a shaft 74 having fixed thereto a pinion 7 5 which is disposed in mesh with a rack bar 80 carried by and extending longitudinally of the bracket 54. A ratchet wheel and lever device 7677 is provided for rotating the shaft 7 4 thereby to effect adj ustments of the slide member 65 along the bracket 54 through the instrumentality of the rack and pinion as is obvious.

Secured upon the top of the slide member 65 by a pivot pin 91, whereby it is reversible end for end, is a tool carrier 65A in which is mounted a horizontal, rotatable shaft 66 equipped at one end with a mortising tool in the form of a square chisel and bit designated as 69 and at its other end with a routing tool or bit 69. Thus, by reason of the reversibility of the tool carrier 65A, the tools 69, 69 are adapted for selective use as is manifest, and in order to hold the tool carrier against pivotal movement when either tool is disposed in operative position, plates 92, 93 are provided to be secured in overlying relation to the sides of the member 65 and the tool carrier by means of a bo t or bolts 94 extending through the latter, it being understood, of course, that when it is desired to reverse the tool carrier said plates are removed and that after the reversal has been effective said plates are again applied to maintain the adjustment.

Fixed to the shaft 66 is a worm wheel 85 with which meshes a worm 84 on the shaft of an electric motor 81 carried by the tool carrier 65A, whereby said shaft is adapted to be ower driven.

11 some instances it may be found that the motor 81 in a given position may interfere with proper operation of the machine. Therefore, in order to provide for varying the position of the motor relative to its sup port 65A, the motor is formed with suitable slotted flanges through which are passed the bolts 83 for fastening the motor to the tool carrier, the consequence being that the motor is adjustable to various angular positions relative to said tool carrier without interfering with its operative driving connection with the shaft 66.

Suitable gauges 87, 89 carried by the cross bars 27, 28 in cooperation with suitable pointers 88, 90, respectively, carried by the bracket 54 provide a convenient means for indicating and predetern'iining the width of a particular mortise to be formed, while other gauges 95 in the form of stop members adjustable as to effective length are carried by the cross bars 27, 28 for contact with the cross bar 28 and the cross bar 29, respectively, to limit the vertical travel of the cross bar 28 whereby the length of a particular mortise may be predetermined. Any desired number of the gauges 95 may be provided and preferably they are composed of pivotally connected sections whereby they may quickly be swung to inoperative positions, a spring 97 preferably being provided to hold the sections of each gauge either alined or disalined.

In Figs. 17 and 18 of the drawings is illustrated a device to facilitate mounting of the machine in operative position upon an object. This device consists of a horizontal bar 100 provided at one end with a lateral arm 105 and at its other end with aseries of apertures, the arm 105 having an opening through which is threaded a horizontal shaft 10s and the apertures being designed to selectively receive a stop pin 103. Slidably mounted on said bar is a pair of clamp members 101, 102 the former of which is adapted to be limited as to outward movement along the bar by the stop pin 103 and the latter of which is adapted for adjustment towards and from the first-clamp member by the screw shaft 104, said shaft for this purpose being provided with a hand wheel 106.

Depending from the clamp members 101, 102 are rods 110, 111, respectively, on each of which is slidably adjustable a plurality of bracket arms 112 adapted to be secured in adjusted positions along said rods by set screws 113.

The clamps 101, 102 are adapted to be engaged with the top part of an object to be inortised, such as a door for example, whereby the mortising machine may be supported by two or more of the bracket arms 112during clamping of the machine upon the door. in this connection it will be observed that the bar 100 carries a bracket in which is threaded a vertical shaft 107 provided at its upper end witl a hand wheel 108 for effecting its rotation and at its lower end with a swivel plate 109 for engagement with the top of the door whereby the device as an entirety may be vertically adjusted to dispose the mortising machine at a desired elevation relative to the door.

When the mortising machine has been clamped to the door or other object in a desired position relative thereto, mortising is efiected first by means of the tool 69 and finally by means of the tool 69 in a manner which is well known, the tool carrier A be ing reversible as heretofore stated to enable selective employment of the tools, which latter, as is understood, are project-able and retractible with the slide member 65 through the instrumentality of the rack and pinion 8075 previously described. The racks 61, 62 and the pinions 59, 60 provlde for vertical adjustments of the tools while the screw shaft 57 provides for lateral adjustment of the tools, and in addition, the segment 52 and the pinion 50 provide for angular adjustments of the tools about the vertical axes 48, 49, so that mortising may be effected at practically any desired location and at any desired angle.

WVithout further description it is thought that the features and the advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and detailsof construction may be resorted to without departing from the spirit of the invention and the scope of the appended claims.

I claim:

1. A mortising machine comprising a frame inclusive of a pair of spaced parallel posts, cross bars connecting saidposts rigidlytogether, clamp devices pivotally connected with said cross bars for securing the frame upon an object, means for securing the frame in diflerent pivot-ally adjusted positions relative to said clamp devices, and a mortising tool supported by said frame for adjustments with respect thereto longitudinally transversely and towards and from the plane thereof. 7

2-. A ni-ortising machine comprising a frame inclusive of a pair of spaced parallel posts, cross bars connecting said posts rigidly together, clamp devices for securing the frame rigidly upon an object, pins pivotall'y connecting said frame upon said clamp devices whereby the frame is adapted for angular adjustments relative to the clamp devices, a segmental gear rigid with one of said cross bars, apinion fixed to the related pivot pin and meshing with said gear, means forsecuring said pivot pin against rotation, and a mortising tool sup-ported by said frame for adjustments with respect thereto longitudinally transversely and towards and from the. plane thereof.

3. A mort-ising machine comprising a frame, means for securing said frame upon an object to be mortised, a bar adjustable longitudinally along said frame, a bracket carried by said bar for adjustment with respect thereto transversely with respect to the frame, a slide member carried by said bracket for adjustment with respect thereto towards and from said bar, a tool carrier reversibly mounted on said slide member, a double ended tool carried by said tool carrier, an electric motor mounted on said tool carrier in driving relation to said tool, and means for varying the disposition of the motor relative to the tool carrier.

4. In combination, a mortising machine inclusive of a frame composed of spaced parallel posts, cross bars connecting said posts together, a mortising tool carried by said frame for adjustments longitudinally, trans versely and forwardly and rearwardly with respect thereto, means for securing said frame upon an object to be mortised, and a device adapted to be secured upon the object for cooperation with the cross bars of said frame to support the latter upon the object during securement of the machine to the object.

5. In combination, a mortising machine inclusive of a frame composed of spaced parallel s, cross bars connecting said posts toge er, a mortising tool carried by said frame for ad'ustments longitudinally, transversely and orwardly and rearwardly with respect thereto, means for securing said frame upon an object to be mortised, and a device a apted to be secured upon the object 4 for cooperation with the cross bars of said frame to support the latter upon the object during securement of the machine to the object, said device comprising a bar, clamp means carried by said bar for engagement with the object to secure the bar thereto, means for vertically adjusting the bar relative to the object, rods depending from said bar, and bracket arms on said rods for engagement with the cross bars of the mortis- Zfi mg machine to support the latter.

n testimon whereof I affix my signature.

ABCHI ALD KAYE MACLEOD. 

